CN209500904U - A kind of sedimentation basin being convenient to clean pool bottom sludge - Google Patents
A kind of sedimentation basin being convenient to clean pool bottom sludge Download PDFInfo
- Publication number
- CN209500904U CN209500904U CN201822194952.8U CN201822194952U CN209500904U CN 209500904 U CN209500904 U CN 209500904U CN 201822194952 U CN201822194952 U CN 201822194952U CN 209500904 U CN209500904 U CN 209500904U
- Authority
- CN
- China
- Prior art keywords
- pond body
- cleaning shoe
- driven gear
- rake
- convenient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 52
- 238000004062 sedimentation Methods 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 74
- 230000003139 buffering effect Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007937 lozenge Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 208000036829 Device dislocation Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Landscapes
- Sewage (AREA)
Abstract
The utility model discloses a kind of sedimentation basins for being convenient to clean pool bottom sludge, belong to sewage treatment field, it includes pond body, the cleaning shoe of cleaning pond body bottom wall is provided in the pond body, the cleaning shoe is arranged perpendicular to pond body length direction, the cleaning shoe is fixedly connected with support arm perpendicular to two surveys of length direction, the support arm is arranged along cleaning shoe length direction, the pond body is provided with driving device on opposite two sidewalls, the support arm is fixedly connected on the drive means far from the side of cleaning shoe, the driving device driving support arm and cleaning shoe are moved along pond body length direction.The utility model have the effect of can the sludge safely and efficiently to sedimentation basin bottom clear up.
Description
Technical field
The utility model relates to sewage treatment field, in particular to a kind of sedimentation basin for being convenient to clean pool bottom sludge.
Background technique
Sedimentation basin is a kind of structures that water float object is taken out using precipitation, is a kind of to set for what is purified water
It is standby, the suspended matter in water is removed using the natural sedimentation of water or the effect of coagulating sedimentation, the sludge accumulation to settle down is in pond
Bottom wall needs periodic cleaning.
Existing notification number is that the Chinese patent of CN206604235U discloses a kind of novel primary sedimentation tank, including pond body.Pond body
It inside sets there are two pond slot, pond body upper storage reservoir slot is interior to be equipped with slope, and the gradient on the slope is 25%-35%.It is evenly provided on slope
The drainpipe of the sedimentation basin in several water inlets, these water inlets and glass cleaning workshop is connected.It is set at separate slope in pond body
There is rhone, the bottom of the rhone is equipped with several gully-holes, and the side of rhone is equipped with drainage hole in pond body.Pond body upper storage reservoir
The bottom of slot is embedded with rail, and the top surface of the rail is overlapped with the bottom surface of pond slot.
It is above-mentioned that following defect exists in the prior art: after the sludge of sedimentation is accumulated to settling tank bottom, by forklift open to
The mode that sludge is cleared up at settling tank bottom, there are some potential safety problemss, it is difficult to avoid forklift driver operation improper and send out
Raw dangerous situation, this problems demand solve.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of pool bottom sludges of being convenient to clean
Sedimentation basin, have the effect of can the sludge safely and efficiently to sedimentation basin bottom clear up.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of sedimentation basin being convenient to clean pool bottom sludge is provided with the cleaning shoe of cleaning pond body bottom wall, institute in the pond body
It states cleaning shoe to be arranged perpendicular to pond body length direction, the cleaning shoe is fixedly connected with support perpendicular to two surveys of length direction
Arm, the support arm are arranged along cleaning shoe length direction, and the pond body is provided with driving device on opposite two sidewalls, described
Support arm is fixedly connected on the drive means far from the side of cleaning shoe, and the driving device driving support arm and cleaning shoe are along pond
The movement of body length direction.
By using above-mentioned technical proposal, driving device driving cleaning shoe is moved along pond body length direction, and pond body is sunk
The sludge in shallow lake pushes to pond body side, has the effect of efficiently clearing up the sludge of the intracorporal accumulation in pond.
The utility model is further arranged to: the pond body bottom wall is made of rake and horizontal part, the rake one
It is connected between side and horizontal part and buffers slope, the height for the side that the buffering slope is connected with rake is lower than buffering slope and level
Pond body is arranged in perpendicular to length direction and far from the side wall top of horizontal part in the connected side in portion, the other side.
By using above-mentioned technical proposal, cleaning shoe is initially positioned at side of the horizontal part far from rake, along pond body length
The sludge of pond body is pushed to rake, and finally push to pond body side wall top after the buffering of buffering slope by direction movement
On, so that the later collection of sludge is cleared up.
The utility model is further arranged to: the driving device includes driving motor, driving gear, the first driven gear
And second driven gear, the rotor and driving gear of the driving motor are coaxially fixed, the first driven gear and second driven
Gear is rotatably connected on pond body side wall, the line between first driven gear and the second driven gear midpoint and level
Angle between face is equal to the angle between the rake and horizontal plane, wherein the setting of the first driven gear is on buffering slope
Side；
Chain, the chain and driving are connected between the driving gear and the first driven gear, the second driven gear
It is engaged between gear, the first driven gear and the second driven gear, the support arm is fixed at the upper surface of chain.
By using above-mentioned technical proposal, start driving motor, cleaning shoe is enabled to move along horizontal part length direction, when scraping mud
When plate is moved to above buffering slope, the line direction between the first driven gear and the second driven gear is moved, and sludge is pushed away
It send to rake, and is pushed out pond body.
The utility model is further arranged to: the rake is provided with collection hopper, the pond far from the side on buffering slope
The two sidewalls of collective, body village length direction are extended far from horizontal part side mounting plate, collection hopper setting mounting plate it
Between, and the side of the collection hopper and rake end abutment.
It by using above-mentioned technical proposal, collects by the sludge that cleaning shoe is pushed out pond body to collection hopper, to receive
The sludge that collection cleaning shoe is cleaned out.
The utility model is further arranged to: the collection hopper is rotationally connected between mounting plate, is set on the collection hopper
It is equipped with the pull rod of control collection hopper rotation.
By using above-mentioned technical proposal, when the sludge in collection hopper is accumulated to a certain amount of, pull rod is pulled, collection hopper is made
It is directed away from the side inclination of rake, can be connect away the sludge in collection hopper by tools such as forklifts at this time, so as to sludge
Cleaning.
The utility model is further arranged to: the cross section of the collection hopper is in " V " type.
By using above-mentioned technical proposal, V-shaped collection hopper falls into collection hopper convenient for sludge, while being in certain angle
It spends inclined side wall and collection hopper just is poured out with by sludge.
The utility model is further arranged to: the bottom end of the cleaning shoe is formed with wedge-shaped part, the wedge shape of the wedge-shaped part
It is arranged facing towards pond body far from rake side.
By using above-mentioned technical proposal, wedge-shaped part can effectively reduce the contact area between cleaning shoe and pond body bottom wall,
The frictional force for keeping cleaning shoe suffered in scale removal process reduces, and reduces abrasion.
The utility model is further arranged to: multiple water holes are offered on the cleaning shoe.
By using above-mentioned technical proposal, water hole can reduce cleaning shoe suffered resistance during the motion, reduce
Resistance suffered by support arm, prolongs the service life in moving process.
In conclusion the utility model has the following beneficial effects:
1. the driving device moved by cleaning shoe and driving cleaning shoe along pond body length direction, convenient for pond body bottom wall
The effect that the sludge accumulated is cleared up；
2. by the setting of horizontal part and rake, convenient for the sludge cleaned out is cleaned out pond body；
3. by the collection hopper being rotatably arranged between mounting plate, so that the sludge cleaned out to cleaning shoe is collected
And cleaning.
Detailed description of the invention
Fig. 1 is in the utility model for embodying whole structural schematic diagram；
Fig. 2 is in the utility model for embodying the diagrammatic cross-section of pond body internal structure.
In figure, 1, pond body；11, rake；12, horizontal part；13, slope is buffered；14, collection hopper；141, pull rod；142, turn
Axis；15, mounting plate；151, recessing groove；2, cleaning shoe；21, support arm；22, wedge-shaped part；23, water hole；3, driving device；31,
Driving motor；32, gear is driven；33, the first driven gear；34, the second driven gear；35, chain；36, support rod.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
A kind of sedimentation basin being convenient to clean pool bottom sludge, as shown in Figure 1, including pond body 1, pond body 1 is interior perpendicular to length side
To cleaning shoe 2 is provided with, there are lesser distances with 1 bottom wall of pond body for the bottom end of cleaning shoe 2.Cleaning shoe 2 is perpendicular to length direction
Two surveys be fixedly connected with support arm 21, support arm 21 is arranged along 2 length direction of cleaning shoe, along the opposite two sidewalls of pond body 1
It is provided with driving device 3, support arm 21 is fixedly connected in driving device 3 far from the side of cleaning shoe 2, and cleaning shoe 2 passes through drive
Dynamic device 3 drives support plate to move along 1 length direction of pond body, and multiple water holes 23 are offered on cleaning shoe 2.
As illustrated in fig. 1 and 2,1 bottom wall of pond body is made of horizontal part 12 and rake 11, between rake 11 and horizontal part 12
It is connected with buffering slope 13, buffering slope 13 is tilted towards 11 side of rake.Rake 11 is extended to far from the side on buffering slope 13
Side wall top of the pond body 1 far from horizontal part 12, the angle between 12 extended line of rake 11 and horizontal part is 30 °.Driving assembly
Including driving motor 31 and driving gear 32, driving gear 32 is arranged on the side wall of 1 length direction of pond body, driving motor 31
Rotor is coaxial fixed with driving gear 32；Driving device 3 further includes the first driven gear 33 and the second driven gear 34, first from
Moving gear 33 and the second driven gear 34 are rotatably connected on 1 side wall of pond body, and the driving setting of gear 32 is separate in horizontal part 12
The side on slope, the setting of the first driven gear 33 is above buffering slope 13, in the first driven gear 33 and the second driven gear 34
Line between point is parallel with rake 11, and the two sides up and down of the first driven gear 33 are provided with for keeping 35 angle of chain
Support rod, support arm 21 is fixedly welded at the upper surface of chain 35 far from the side of cleaning shoe 2, cleaning shoe 2 when starting
In side of the horizontal part 12 far from rake 11.
When after sedimentation after a period of time, partial sludge is piled up on 1 bottom wall of pond body in sedimentation basin, start driving motor
31 rotate forward, and driving gear 32 drives the first driven gear 33 and the second driven gear 34 to start turning, and chain 35 drives support arm
21 and cleaning shoe 2 moved towards rake 11, the sludge that 1 bottom wall of pond body is accumulated in 2 bottom end of cleaning shoe pushes, when scraping mud
After plate 2 moves between the first driven gear 33 and the second driven gear 34, cleaning shoe 2 continues to drive sludge on rake 11
Movement, continues after moving to side of the rake 11 far from horizontal part 12, can clear up sludge.Due to cleaning shoe 2
Height remain unchanged and with 12 bottom wall of horizontal part present at a distance from it is smaller, and deposited between 12 extended line of rake 11 and horizontal part
In angle, when extended line angle is 30 ° between rake 11 and horizontal part 12, between 35 upper surface of rake 11 and chain
Vertical range be equal between horizontal part 12 and chain 35 distance 2 √ 3x/3, due to the limitation of difference in height, cleaning shoe 2 be difficult to after
Continue and moved to rake 11, therefore add buffering slope 13, and the setting of the first driven gear 33 is buffering above slope 13, when cleaning shoe 2
When moving between horizontal part 12 and rake 11, cleaning shoe 2 turns to vertical with rake 11 with the tilt angle of chain 35
State, certain buffer time for being adjusted the angle to cleaning shoe 2 of setting on buffering slope 13, if conveyer belt and 12 upper surface of horizontal part
The distance between be x, unit is rice, and the difference in height at buffering 13 both ends of slope is equal to 2 √ 3x/3-x, is approximately equal to 0.154x meter, is buffered
The distance between 13 two sides of slope are shorter, so that the angle of cleaning shoe 2 adjusts.Due to buffering the distance between 13 two sides of slope difference compared with
It is small, therefore be not easy to accumulate a large amount of sludge, and when sludge cleared up to cleaning shoe 2 it is caused influence it is smaller.Cleaning shoe 2 is after reforwarding
It is dynamic, sludge is pushed into side of the rake 11 far from horizontal part 12, to collect.It, can be by the motion process of cleaning shoe 2
To the resistance from water flow, the setting of water hole 23 can make part water flow by water hole 23, reduce water flow and be produced to cleaning shoe 2
Raw resistance effectively reduces damage suffered by support arm 21, to extend the service life of cleaning shoe 2.
As shown in Fig. 2, the side that the two sides of 1 length direction of pond body are directed away from horizontal part 12, which is extended, mounting plate 15,
Collection hopper 14 is provided between mounting plate 15,14 two sides of collection hopper are provided with shaft 142, and shaft 142 is embedded in mounting plate 15,
It and is rotation connection, rewinding portion side and 11 end abutment of rake between mounting plate 15.Collection hopper 14 is close to mounting plate
15 side is provided with pull rod 141, rotation connection is similarly between shaft 142 and pull rod 141, mounting plate 15 is far from horizontal part 12
Side wall on offer the recessing groove 151(moved up and down for pull rod 141 referring to Fig. 1), and the cross section of collection hopper 14 is in " V "
Shape.After sludge is pushed to 11 end of rake by cleaning shoe 2, the collection hopper 14 being arranged between mounting plate 15 carries out sludge
Accept, when the sludge in collection hopper 14 collect to a certain degree after, pull pull rod 141, make collection hopper 14 to far from rake 11
Side inclination, accepts the sludge in collection hopper 14 using tools such as forklifts, convenient for the collection and cleaning of sludge.Mounting plate
15 extend upward certain altitude, and the second driven gear 34 is rotatably connected on mounting plate 15, and cleaning shoe 2 is made to be moveable to inclination
11 end of portion, so that sludge is preferably fallen into collection hopper 14, the gradient of 14 two sides of collection hopper is convenient for collection sludge and will be dirty
Collection hopper 14 is discharged in mud.
As shown in Fig. 2, the bottom end of cleaning shoe 2 is formed with wedge-shaped part 22, the lozenges of wedge-shaped part 22 inclines towards pond body 1 is separate
The setting of 11 side of inclined portion, wedge-shaped part 22 can effectively reduce the contact area between 1 bottom wall of cleaning shoe 2 and pond body, cleaning shoe 2 made to exist
Suffered frictional force reduces in scale removal process, reduces abrasion.
The implementation principle of above-described embodiment are as follows: after 1 bottom wall of pond body accumulates a certain amount of sludge, start driving motor 31,
Make that gear 32 is driven to drive the first driven gear 33 and the rotation of the second driven gear 34, drives chain 35 and cleaning shoe 2 towards inclining
Inclined portion 11 moves, and when cleaning shoe 2 moves to buffering 13 top of slope, the cooperation adjustment angle of chain 35 is extremely vertical with rake 11,
Sludge is pushed into 11 end of rake, and is dropped down onto collection hopper 14.When the sludge accumulation in collection hopper 14 to it is a certain amount of when, draw
Dynamic pull rod 141 makes collection hopper 14 be directed away from the inclination of 12 side of horizontal part, by tools such as forklifts to the sludge in collection hopper 14
It is collected.After the completion of primary cleaning, driving motor 31 is enabled to invert, cleaning shoe 2 returns to horizontal part 12 far from 11 side of rake,
So that cleaning next time uses.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of sedimentation basin for being convenient to clean pool bottom sludge, including pond body (1), it is characterised in that: be provided in the pond body (1)
The cleaning shoe (2) of pond body (1) bottom wall is cleared up, the cleaning shoe (2) is arranged perpendicular to pond body (1) length direction, the cleaning shoe
(2) it is fixedly connected with support arm (21) perpendicular to two surveys of length direction, the support arm (21) is along cleaning shoe (2) length direction
Setting, the pond body (1) are provided with driving device (3) on opposite two sidewalls, and the support arm (21) is far from cleaning shoe (2)
Side be fixedly connected on driving device (3), the driving device (3) driving support arm (21) and cleaning shoe (2) are along pond body
(1) length direction moves.
2. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 1, it is characterised in that: the pond body (1)
Bottom wall is made of rake (11) and horizontal part (12), is connected with buffering between rake (11) side and horizontal part (12)
Slope (13), the height for the side that buffering slope (13) is connected with rake (11) is lower than buffering slope (13) and horizontal part (12) phase
Side even, other side setting is in pond body (1) perpendicular to length direction and far from the side wall top of horizontal part (12).
3. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 2, it is characterised in that: the driving device
It (3) include driving motor (31), driving gear (32), the first driven gear (33) and the second driven gear (34), the drive
The rotor of dynamic motor (31) is coaxial fixed with driving gear (32), and the first driven gear (33) and the second driven gear (34) turn
It is dynamic to be connected on pond body (1) side wall, the line between first driven gear (33) and the second driven gear (34) midpoint and
Angle between horizontal plane is equal to the angle between the rake (11) and horizontal plane, wherein the first driven gear (33) is arranged
Above buffering slope (13)；
Chain (35), institute are connected between the driving gear (32) and the first driven gear (33), the second driven gear (34)
It states and is engaged between chain (35) and driving gear (32), the first driven gear (33) and the second driven gear (34), it is described
Support arm (21) is fixed at the upper surface of chain (35).
4. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 3, it is characterised in that: the rake
(11) side far from buffering slope (13) is provided with collection hopper (14), and the two sidewalls of pond body (1) length direction are far from horizontal
Portion (12) side, which is extended, to be had mounting plate (15), and the collection hopper (14) is arranged between mounting plate (15), and the receipts
The side of hopper (14) and rake (11) end abutment.
5. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 4, it is characterised in that: the collection hopper
(14) it is rotationally connected between mounting plate (15), the pull rod of control collection hopper (14) rotation is provided on the collection hopper (14)
(141)。
6. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 5, it is characterised in that: the collection hopper
(14) cross section is V-shaped.
7. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 1, it is characterised in that: the cleaning shoe
(2) bottom end is formed with wedge-shaped part (22), and the lozenges of the wedge-shaped part (22) is towards pond body (1) far from rake (11) side
Setting.
8. a kind of sedimentation basin for being convenient to clean pool bottom sludge according to claim 7, it is characterised in that: the cleaning shoe
(2) multiple water holes (23) are offered on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822194952.8U CN209500904U (en) | 2018-12-25 | 2018-12-25 | A kind of sedimentation basin being convenient to clean pool bottom sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822194952.8U CN209500904U (en) | 2018-12-25 | 2018-12-25 | A kind of sedimentation basin being convenient to clean pool bottom sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209500904U true CN209500904U (en) | 2019-10-18 |
Family
ID=68197184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822194952.8U Expired - Fee Related CN209500904U (en) | 2018-12-25 | 2018-12-25 | A kind of sedimentation basin being convenient to clean pool bottom sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209500904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910733A (en) * | 2020-07-01 | 2020-11-10 | 浙江军天建筑装饰工程有限公司 | Drainage pipeline laying structure and laying method thereof |
| CN112759053A (en) * | 2020-12-31 | 2021-05-07 | 宁波明州热电有限公司 | Neutralization pond |
-
2018
- 2018-12-25 CN CN201822194952.8U patent/CN209500904U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910733A (en) * | 2020-07-01 | 2020-11-10 | 浙江军天建筑装饰工程有限公司 | Drainage pipeline laying structure and laying method thereof |
| CN112759053A (en) * | 2020-12-31 | 2021-05-07 | 宁波明州热电有限公司 | Neutralization pond |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100917956B1 (en) | Monorail type multistage sludge collector | |
| CN209500904U (en) | A kind of sedimentation basin being convenient to clean pool bottom sludge | |
| CN211863980U (en) | Rectangular sedimentation tank mud scraping and slag discharging equipment | |
| US1916460A (en) | Sedimentation device | |
| KR100314498B1 (en) | Apparatus for collecting scum and sludge of settling tank | |
| CN106512491A (en) | Turnover precipitation separation device | |
| CN206934817U (en) | A kind of concrete sedimentation basin | |
| EA017021B1 (en) | Sludge pump | |
| KR20090059759A (en) | The removing device of scum and sludge in the circle water tank | |
| KR101730384B1 (en) | Wedge Type Sludge Collector | |
| RU192011U1 (en) | LIQUID CLEANER | |
| CN203370341U (en) | Peripheral transmission primary sedimentation tank mud scraper | |
| CN209967765U (en) | Mud scraper with cleaning function | |
| CN203370340U (en) | Peripheral transmission mud scraper with flow blocking plates | |
| KR100826996B1 (en) | round typed sludge collecting device | |
| CN220572730U (en) | Sedimentation tank for water treatment | |
| KR100447271B1 (en) | A Height variable ware and beach of dissolved air flotation | |
| CN219595943U (en) | Sewage sedimentation tank convenient to floater separation and silt clearance | |
| CN113775028B (en) | Rainwater regulation pond and rainwater regulation system | |
| CN211411110U (en) | Walking mud scraper | |
| EA017414B1 (en) | Sludge scraper to radial settling tank | |
| CN211521811U (en) | Airtight automatic food and beverage water oil separating equipment | |
| KR200289105Y1 (en) | sludge and scum remover of water purifying plant | |
| CN216136742U (en) | Slag scraping device convenient to empty for sewage treatment | |
| CN220589038U (en) | Inclined tube sedimentation tank inclined tube top mud accumulation cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 |